Automatically Revert Temporary Value Changes in a with Block

The new rollback() API introduced in triggon v2.0.0 can automatically revert temporary changes to variables and attributes made in a with block. It also supports local variables, so it's only available on CPython 3.13+. Code Example Here's a simple example. In this example, the variable x is assigned 99 inside the block, but once the block exits, it's restored to its original value, 1 . from triggon import Triggon x = 1 with Triggon . rollback (): x = 99 print ( x ) # 99 print ( x ) # 1 You can also pass the names of variables or attributes to rollback() , so only the specified targets will be restored. class A : a = 10 x = 0 # x isn't included in the rollback target with Triggon . rollback ( " A.a " ): x = 99 A . a = - 10 print ( x ) # 99 print ( A . a ) # -10 print ( x ) # 99 print ( A . a ) # 10 Variables defined inside the block aren't restored. triggon recently had a major update with 8 new APIs. You can check the details in the release notes . triggon is basically a label-based l